Table 3.

Mean Annual Rate, Crude and Adjusted Rate Ratios of Emergency Department Visits among Uninsured Adults in non-CHC vs. CHC Counties, 2003-2005.

	Number of Events, 2003- 2005		Mean Annual Rate		Unadjusted Model		Adjusted** Model
	No CHC	CHC	No CHC	CHC	RR	95% CI	RR	95% CI
All Emergency visits	615,789	79,901	7343	5510	1.33	1.11- 1.59	1.21	1.02- 1.42
Ambulatory Care Sensitive Conditions	131,095	16,508	1563	1138	1.37	1.11- 1.70	1.22	1.01- 1.47
Non- Emergent or Emergent Primary Care Treatable	89,447	11,802	1067	814	1.31	1.06- 1.62	1.18	0.97- 1.43
Emergent, ED Care Needed	25,409	3,617	303	249	1.21	1.03- 1.44	1.11	0.95- 1.31
Diabetes	3,272	430	39	30	1.32	1.04- 1.66	1.24	0.98- 1.56
Asthma	6,169	806	73	56	1.32	1.04- 1.68	1.21	0.95- 1.53
Hypertension	4,854	716	58	49	1.17	0.91- 1.51	1.20	1.11- 1.30

^*Rates calculated per 10,000 uninsured adults, based on year 2000 census estimates of uninsured; No CHC: 279,536 CHC: 48,340.

^**Poisson regression model adjusted for percent black population, percent population below poverty level, number of hospitals and overdispersion of variance.